baber/WOPTO huggingface dataset:
Patent GB-337406-A (GB)
Title: Improvements in the manufacture and production of sulphuric acid and nitric acid
IPC: C01B21/086
Filed: 1929-06-13
Abstract: 337,406. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). June 13, 1929. Ada@ tion to 301,232. Nitric and sulphuric acids. - In the simultaneous production of nitric and sulphuric acids by scrubbing gas mixtures containing nitrogen and sulphur oxides with sulphuric or nitrosyl sulphuric acid, as described in the parent Specification, so much nitrogen oxides are present that the whole of the sulphur dioxide is converted into sulphuric or nitrosyl sulphuric acid, or a mixture of sulphuric and nitric acids. Gas mixtures containing 2 molecular proportions of nitrogen oxides, calculated as nitric oxide, to each 1 to 2 molecular proportions of sulphur dioxide, such as are obtained by catalytic oxidation of ammonium sulphite, are suitable. The oxidation and absorption of the sulphur dioxide take place in the first part of the plant, and the remaining nitrogen oxides, after cooling and addition of oxygen if necessary, are recovered as pure nitric acid. The first tower may be fed with sulphuric acid, which is circulated and diluted with water or the aqueous condensate of the gases, to maintain a concentration of about 60 per cent, when a practically pure sulphuric acid is obtained. If the gas mixture contains suficient water no. scrubbing acid need be added. At higher concentrations nitrosyl sulphuric acid is formed and treated as in the parent Specification, while weaker acid gives a mixture of nitric and sulphuric acids, which can be treated to give sulphuric acid and nitrogen oxides. Pure nitric acid is obtained in the subsequent towers around which nitric acid is continuously circulated. The final washing may be effected with an alkali such as lime water. Specification 253,344 is referred to. Reference has been directed by the Comptroller to Srecification 301,232.
Patent GB-1013258-A (GB)
Title: Rotary lampshades
IPC: F21V9/40
Filed: 1963-05-09
Abstract: 1,013,258. Rotary display devices. E. D. RUPPEL. April 27, 1964 [May 9, 1963], No. 18290/63. Heading G5C. [Also in Division F4] In a lampshade having a vaned member which is rotated by ascending currents of air produced by the heat from an electric lamp, the vaned member is disposed wholly within an outer casing part at least of which is rotated and which has openings above and below the vaned member for access and escape of air. The shade consists of upper and lower hemi-spherical members 10, 11 united by a band 12. A disc 19 having vanes pressed out of the surface is riveted to the upper member 10 and carries a bearing bush 20 which rests on a spike 21 on a frame 15 secured to the bulb holder. The member 10 has a number of perforations 17 at the upper end. The member 11 has an aperture 14 for insertion of the bulb holder. In a modification, the members 10, 11 are separate, the member 11 being fixed to the bulb holder and the member 10 only revolving. The shade may be of metal, synthetic resin or parchment and may be supported by a wire frame. The shade and/or the band 12 may carry advertizing matter.
Patent GB-482736-A (GB)
Title: Process for the manufacture of methacrylic acid and esters thereof
IPC: C07C51/25
Filed: 1936-07-01
Abstract: Methacrylic acid is manufactured by oxidizing a -methylacrolein by means of oxygen or oxygen-containing gases in the presence of organic solvents, preferably chlorinated hydrocarbons, e.g. carbon tetrachloride or trichlorethylene, or aromatic hydrocarbons, e.g. benzene, if desired in the presence of compounds of heavy metals, e.g. iron, copper, nickel, cobalt or manganese salts, preferably of organic acids, especially of acrylic or methacrylic acid.  The oxidation may be effected at normal, reduced or increased pressure, advantageously at about 20-60 DEG  C.  The concentration of a -methylacrolein may be up to about 80 per cent, but preferably below 50 per cent, advantageously 10-25 per cent.  The oxidation may be carried out in the presence of antipolymerization catalysts, e.g. sulphur or alcohols, but these, especially phenolic compounds such as hydroquinone or b -naphthol are preferably added after the oxidation to prevent polymerization during the working up.  If alcohols are employed, esterification may be carried out simultaneously.  In examples: (1) a -methylacrolein dissolved in benzene is treated with air under atmospheric pressure; the methacrylic acid formed may be esterified by means of methanol in the presence of sulphuric acid and hydroquinone; (2) oxygen under 20 atmospheres pressure is employed as oxidizing agent; (3) oxygen at 2 atmospheres pressure is employed and copper acrylate is added as catalyst.  a -Methylacrolein is obtainable by dehydrogenation or oxidation of a -methylallyl alcohol.
Patent GB-1037864-A (GB)
Title: Improvements in or relating to machines suitable for use in attaching heels to shoes
IPC: A43D79/00
Filed: 1963-05-09
Abstract: 1,037,864. Heel attaching machines. BRITISH UNITED SHOE MACHINERY CO. Ltd. May 9, 1963 [May 15, 1962], No. 18314/63. Heading A3B. A heel attaching machine has a presser head which has a tread abutment adjustable heightwise of a shoe and about an axis transverse of a shoe, and a back clamp which is adjustable lengthwise and about an axis transverse of a shoe. The presser head 38 is detachably mounted on a piston rod 44 for heightwise movement to press a heel 20 against a shoe 22. The tread abutment 96 is mounted, for adjustment about a transverse axis, in an arcuate guideway 98 in a rod 94 which is adjustable heightwise by means of a knurled nut 100. Similarly the back clamp 130 is mounted in an arcuate guideway in a block 114 which is adjustable lengthwise by a screw 122 having a knurled end 120. The two halves of the back clamp 130, are mounted on opposite ends of a screw 132 having opposite threads at each end, thus allowing the spacing of the clamps to be adjusted by rotating knurled wheel 134 (Fig. 5, not shown).
Patent GB-256040-A (GB)
Title: Method of and apparatus for annealing glass
IPC: C03B25/08
Filed: 1925-07-17
Abstract: 256,040. White, A. E., (Mississippi Glass Co.). July 17, 1925. Annealing.-A method of annealing glass consists in passing the hot plastic glass between heat-insulating walls the conductivity of which increases in the direction of movement of the glass, so that the glass is subjected to slow and gradual cooling. In applying the method to the annealing of sheet glass, the sheet. 15, as it leaves the rolling-apparatus. passes between endless travelling belts 1, 2 of asbestos which pass over pairs of rollers 7, 8 and 9, 10. Within these belts, shorter belts 3, 4 are ar. ranged, and other shorter belts 5, 6 are arranged within the belts 3, 4. All the belts pass over the end rollers 7, 8 so that the glass sheet passes between heat-insulating walls the thickness of which decreases towards the outlet end. The belts are driven at such a speed that the hot sheet is carried forward at a rate which allows it to cool slowly and gradually. The upper belts may be in contact with the sheet 15 or they may be arranged a little distance above its surface.
Patent GB-1302119-A (GB)
IPC: E04F13/08
Filed: 1970-04-17
Abstract: 1302119 Supporting wall cladding panels H SCHERFF [trading as HANS SCHERFF] 17 April 1970 [19 April 1969] 18408/70 Heading E1W A wall cladding panel 3 is mounted with clearance from a wall 1 by means of an adjustable device comprising a connecting rod 6 bolted at one end to the wall, the other end being bent into a U-shaped cup member 7 which receives the lower shank portion of an adjustable screw 15 provided in a recess in the panel. Raising and lowering of the panel and clearance from the wall may be varied by adjusting screw 15 in combination with adjustment of a second screw 13 which passes through depending flange 11 of an angle member 9 attached to the cup member 7. For lateral adjustment of the panel the shank end of the screw 15 may be laterally displaced to a limited extent in the cup member 7.
Patent GB-198922-A (GB)
Title: A new or improved tool for removing the pile or tuft from carpets, rugs, or the like
IPC: D06C13/00
Filed: 1922-07-05
Abstract: 198,922. Brimton, C. C. July 5, 1922. Clipping; edges, treating. - A hand tool for removing the pile or tuft from portions of a carpet or rug &c., for example from portions that are subsequently to be turned under, comprises a metal blade 1 with a rounded back and with a sharpened serrated edge, or V-shaped openings 2 with inclined sides. In use, the blade is traversed to and fro and also turned, the pile being cut by the edges 3. The blade has a cranked shaft furnished with a handle.
Patent GB-1383959-A (GB)
Title: Device for dressing grinding wheels
IPC: B24B53/075
Filed: 1972-04-20
Abstract: 1383959 Dressing grinding wheels MAAG GEAR WHEEL & MACHINE CO Ltd 20 April 1972 [21 April 1971] 18435/72 Heading B3D A device for dressing a grinding wheel 20 with an involute profile comprises a curved guide 8 over which a follower element is arranged to roll, a first slider element 11 mounted on the element thereby being constrained to describe an involute related to the axis of the curved guide, a radial guide 10 pivotable on the axis and slidably engaged by the slider element, a second slider element 12 also engaged by the radial guide 10 and attached to a toolholder 13 for the dressing tool 14, the relative positions of the slider elements being adjustable along the radial guide, the toolholder 13 being mounted on a slide 4 that is mounted on guides 6 on a support member 3 pivotable about the curved guide axis, and the follower member being carried by a further slide 5 that is supported for movement parallel to the toolholder slide 4 and relative to the support member 3. The curved guide 8 is fixed to a base 1 which has a shaft 2 supported in bearings 2a, the shaft also having a bearing 2b for the radial guide 10 which is the form of an arm having a radial slot 10a. The support member 3 is pivotally mounted on the shaft and has guides 6 for the toolholder slide 4 which, in turn, has guides 7 for the slide 5. The follower element is carried by the slide for engagement with the curved guide 8 and is connected to the guide by tension tapes 9. The slider element 11 is carried by the slide 5 and engages the slot 10a, and slider element 12 also engages the slot 10a and is adjustable therealong by a screw 16. The slider element 12 is connected to the toolholder 13, which has a diamond tool 14, the toolholder being adjustable with the element 12 along a slot 15a in a plate 15 which is of U-shaped form and straddles the arm 10 and is connected to the slide 4. A double acting ram 17, 19 is provided for driving the device. When the slide 4 is over the support 3, the follower element rolls over the curved guide 8, and the slider element 12 and, hence, the diamond 14, follows an involute curve corresponding to abase circle radius determined by its adjusted position relative to the slider element 11. For dressing a wheel for grinding a helical involute gear, the toolholder carries an adjustable support plate for a pair of slides each carrying a diamond tool.
Patent GB-1384590-A (GB)
Title: Pouring spout
IPC: B22D41/50
Filed: 1972-04-20
Abstract: 1384590 Continuous casting SOUTHWIRE CO 20 April 1972 [20 April 1971] 18448/72 Heading B3F [Also in Divisions F4 and C1] A refractory pouring spout for teeming metal, e.g. copper into a wheel-and-band machine, from a tundish 12 has a tapered bore 16 or a straight bore (17, Fig. 2) and is made of material having the composition 28-70% carbon 0-36% silica 0-22% alumina 0-52% silicon carbide 0-20% silicon 0-20% glaze 0- 5% other refractory substances The spout has a rounded inlet lip 15 whose radius of curvature is equal to or greater than the radius of the upper portion of the tapered bore or the radius of the straight bore. The spout is inserted from the tundish by wedging in the tapered opening 13.
Patent GB-1022409-A (GB)
Title: Device for destroying documents
IPC: B03B9/06
Filed: 1964-05-04
Abstract: 1,022,409. Shredding apparatus. A. P. DURAND. May 4, 1964 [May 4, 1963], No. 18501/64. Heading B2A. Apparatus for destroying documents by shredding them into strips comprises a frame in which are rotatable shafts f, f 1 , carrying unmachined spring steel knives g, separated by washers h. The frame comprises two U-shaped members a, a 1 , Fig. 4 (not shown), connected by struts b, b 1  and housings c, c 1 . The washers are of an injection-moulded plastics material. The strips are freed from the knives by guides p mounted on the struts. The strips are impeded in their exit from the knives by means of a spring-urged flap q so that the strips issue from the apparatus in zig-zag form so that they can be used as packing material. The shafts f, f 1  are driven from a motor m, Fig. 4 (not shown), through reduction gearing. When a document drops between the housings c, c 1  it tilts the lever o of a microswitch to start the motor.
Patent GB-1310532-A (GB)
Title: Strip feeding mechanism
IPC: G03G15/00
Filed: 1970-04-17
Abstract: 1310532 Feeding webs EASTMAN KODAK CO 17 April 1970 [21 April 1969] 18508/70 Heading B8R Strip material 16, e.g. the copy paper for an electrophotographic device, is drawn from a supply roll 10 by co-operating rollers 24, 25 which feed the strip along a path defined by guide plates 28, 38 formed with respective slots 29, 39 through which the rollers 24, 25 extend to engage the strip. The guide plates 28, 38 are pivotally supported about pins 33, (32), Fig. 4 (not shown), and are operatively associated with a pivoted lift bar 17 formed with a pair of cam plates 54, 55. Thus, when the lift bar 17 is raised from a lower position, shown in Fig. 1, to an upper position (Fig. 3, not shown) the cam plates 54, 55 rotate in a clockwise direction thereby raising the shaft 27 of rollers 25 so that the rollers are withdrawn through the slots 29; as this movement continues, shaft 27 engages the upper end of its mounting, i.e. the slots 36 in guide plate 38, so that the guide plate 38 is pivoted about the pins 33, (32). As the bar 17 continues to be raised, tabs 57, (56) on the lower guide plate 28 are engaged by side walls of the guide plate 38 causing the plate 28 also to be pivoted about pins 33, (32) so that it is raised above the rollers 24. In the raised position, endless springs (42), Fig. 2 (not shown), which normally hold the rollers 24 and 25 together, exert a force which holds the shaft 27 in a detent 58 on the cam plate 55; thus the rollers 24, 25 are then spaced on opposite sides of the guide plates, providing a clear open path through which the end of the strip material may be initially positioned for the start of a new feeding operation when an exhausted supply roll is replaced by a full roll.
Patent GB-1454140-A (GB)
Title: Reciprocating compressors
IPC: F04B39/10
Filed: 1974-04-29
Abstract: 1454140 Compressors; inlet and outlet valves W W PAGET 29 April 1974 18577/74 Heading FIN [Also in Division F2] A two stage compressor has an inlet and discharge valve arrangement at the end of each cylinder and each arrangement includes a valve-member which is associated with a part which limits the amount it lifts when open. In a first construction, an annular series of openings 34 in a first valve seat 33 is closed by an annular inlet valve plate 35 and an annular passage between the first seat 33 and a second seat 28 is closed by an annular outlet valve plate 45. The inlet valve plate 35 has diametrically opposed projections 36 and 37 which are received in recesses 38, 39 respectively of a part 31. The recesses 38 hold the valve plate so that it flexes about a line passing through them until the projections 37 abut against the bottoms of their recesses 39 and therby limit valve lift. The outlet valve plate 45 has a pair of similar projections which are received in two recesses in a boss on a cylinder head 24 and which also define a line about which valve plate 45 flexes to open. Lift of plate 45 is limited by an annular backing member. 50 which has two diametrically opposed projections 51 (Fig. 13) located in the two recesses on the boss and which is bent about a line through its projections to curve away from the valve plate 45. Consequently valve plate 45 gradually spreads on to the backing member 50 as it opens or lifts. The annular passage closed by the valve plate 45 may be replaced by an annular series of apertures similar to 34. In a further modification in which an annular inlet valve plate surrounds an annular outlet valve plate, Fig. 15 (not shown) the inlet and outlet valve plates both have backing members. Each valve plate has three equi-angularly spaced notches in its outer periphery and a dowel is located in each notch. The associated backing member is shaped to press the valve plate against its seat at the location of each dowel and so each valve plate flexes between the dowels, upon opening, into contact with its backing member. Varying Capacity: Each cylinder has a liner 13, 17 and each liner has an annular series of openings 18, 19 communicating with respective inlets 11 and 15. For each cylinder there is provided a set of liners with the opening in each one at a different axial location. Consequently the capacity of the compressor is determined by when the piston passes beyond the series of openings. The liners may be made of graphite polyimide or P.T.F.E. and the outer surfaces of the pistons may be hard chrome plated or made of aluminium.
Patent GB-235419-A (GB)
Title: Improvements in and relating to change speed gearing and transmission and control means applicable to motor cars and other purposes
IPC: F16H3/06
Filed: 1924-08-05
Abstract: 235,419. James, T. S. Aug. 5, 1924. Variable-speed worm gearing comprises a pair of crown worm-wheels a, b, c for each speed, driven in the same direction by a driving worm 6 which is moved from one pair to another to change the speed. The worm 6 is carried by a jointed shaft 4 which is movable transversely by a linkage 16, 19, 22. The worm is preferably globular. The worm-wheels are preferably spring-connected to discs 7, 7<1> secured to the differential casing 8 as applied to a vehicle.
Patent GB-789806-A (GB)
Title: Improvements in or relating to lathe turrets
IPC: B23Q16/04
Filed: 1954-06-25
Abstract: 789,806. Lathe-details. COURTOIS, J. M. June 25, 1954 [June 29, 1953], No. 18616/54. Class 83 (3). A lathe-turret comprises a body 1 rotatable on a spindle - unit 8 attached by a base 9<SP>1</SP> to a lathe slide 50, the body being locked in various angular positions by pins 19 engaging pairs of notches 11, 18 respectively formed in the periphery of base 9<SP>1</SP> and in two members 15 fixed in slots 5 formed in the body, a number, e.g. four notches being provided in the base. Spindle 92 extends from the base and threadedly engages a nut 36 carrying a nut 34 engaging a screw 33 having cross-pins 29, 32 engaging slots 13, 14 in the spindle. The pins 19 are pivoted to a carrier 21 having arms in slots of body 1 and a centralboss surrounding spindle 9<SP>2</SP>. A spring 28 extends between pin 29 and the carrier to urge the pins into the notches. A cap 43 covers nut 36 and has a handle 48 which, when turned to unclamp the turret, turns nut 36, thus raising screw 33 which lifts, via cross-pin 32, the pins 19 out of the notches, whereby the turret may be turned manually. On turning the handle in the reverse direction, the pins are lowered and urged by spring 28 into the co-operating pairs of notches. Of each pair of diametrically opposed notches 11, one has oblique walls 11<SP>1</SP>, which cause the coacting pin 19 to centre the turret and align the other pair of notches 11, 18 for the other pin 19. A spring-loaded plunger (not shown), in the lower part 3 of body 1 engages one of the notches in the base 9<SP>1</SP> to provide rough location of the turret prior to the locking thereof.
Patent GB-255902-A (GB)
Title: Improvements in combined razor and blade sharpener and process of sharpening
IPC: B24D15/08
Filed: 1926-07-26
Abstract: 255,902. Haven, H. de. July 24, 1925, [Convention date]. Drawings to Specification. Addition to 235,886. Sharpening-compositions for use in stropping- apparatus for razors comprise a lubricant, or a grinding compound, for example " diamantine " and rouge applied to a block of polished steel, china, or glass, which may have fine lines or cuts to assist in holding the compounds.
Patent GB-884849-A (GB)
Title: New pyrazolopyrimidines and process for the manufacture thereof
IPC: A61K31/00
Filed: 1959-06-01
Abstract: The invention comprises 1- or 2-alkyl-5-alkyl-6-halo-4-oxo-4 : 5-dihydro-pyrazolo[ 3 : 4-d] pyrimidines, wherein the pyrazole ring may contain additionally an alkyl group in the 3-position and the preparation thereof by replacing the hydroxyl group in the corresponding 6-hydroxy compound by a halogen atom for instance by reaction with phosphorus oxychloride or pentachloride or pentabromide.  Specifications 884,848, 884,850 and 884,851 are referred to.ALSO:Pharmaceutical compositions comprise 1- or 2 - alkyl - 3 - R - 5 - alkyl - 6 - halogen - 4 - oxo-4 : 5 - dihydro - pyrazolo - [3 : 4 - a ] - pyrimidines, wherein R is hydrogen or an alkyl group in admixture or in conjunction with a pharmaceutical carrier.  The preparations may be in conventional forms and may contain further therapeutically active substances. Specifications 884,848, 884,850 and 884,851 are referred to.
Patent GB-146834-A (GB)
Title: Improvements in and relating to electric arc welding apparatus
IPC: B23K9/12
Filed: 1920-07-05
Abstract: 146,834. Siemens Schuckertwerke. July 4, 1919, [Convention date]. Void [Published under Sect. 91 of the Act]. Heating by electricity.-In an electric are welding apparatus of the type in which a metal electrode is fed forward automatically or by hand according to its consumption. the current lead is movably connected to the electrode at a point near the arc so that a wire electrode of any desired length may be used, in order to avoid the necessity of changing electrodes and thus interrupting the weld. In the form shown in Fig. 1, the current lead is connected to the feed-rolls 16, 17, which are driven either by a motor 18, as shown, or by clockwork mechanism, or by a handrotated crank. The feed-mechanism may be combined with hand or automatically operated regulating-mechanism for keeping the length of the arc constant. In the form shown in Fig. 2, one of a number of electrodes 15 mounted in a magazine are fed by current-conducting rolls 16, 17, which are rotated by a motor 18 through spur gear 19, 20, sun-and-planet gear 21, 22, 24, and worm gear 23. A shaft mounted on the armature of a differential relay 28 carries pinions 27, 26, of which the pinion 26 gears with a wheel 25 connected to the sun-wheel 24. If the are is normal, the pinion 27 is held from rotation by a stop, but if the arc is too short, the upper or current coil of the relay acts to draw up the armature and bring the pinions 27, 19 into gear and so rotate the sun-wheel 24 in the opposite direction to the wheel 21 and thus reduce, stop, or reverse the feed of the electrode. If the arc is too long, the lower or voltage coil of the relay acts to draw down the armature and bring the pinion 27 into gear with a pinion 29 rotated in the opposite direction to the pinion 19 by gear 30, 31, and so rotates the wheel 24 in the same direction as the wheel 21 and thus increases the rate of feed. In a further modification, Fig. 3, the electrode wire 15 is mounted on a drum 32 which is rotated by worm gear from a motor 18 connected by a switch 33 to a differential relay 28. If the arc is normal the switch is closed, but if it is too short, the switch is opened by the relay and the feed stopped. Current is supplied by a contact 35 consisting of sliding springs, carbon brushes or tubes, &c. The regulating-mechanism in another form may consist of a hand-operated switch, or hand-operated means for varying the speed or direction of rotation of the motor by series or shunt regulation.